The Xiaozhai Tiankeng, also known as the Heavenly Pit, is the world's deepest sinkhole and also the largest in the Shaanxi cluster. It is located in Fengjie County of Chongqing Municipality in China.
Wikipedia https://en.wikipedia.org/wiki/Xiaozhai_Tiankeng
Address China
Coordinates 30°45'2.648" N 109°28'11.396" E